R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 591

MCU 1KB FLASH 16K ROM 32-LQFP

R5F21334CNFP#U0

Manufacturer Part Number
R5F21334CNFP#U0
Description
MCU 1KB FLASH 16K ROM 32-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/33Cr
Datasheet

Specifications of R5F21334CNFP#U0

Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
27
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 561 of 589
33.1.3
33.1.4
Since the oscillation stop detection function cannot be used if the XIN clock frequency is below 2 MHz, set bits
OCD1 to OCD0 to 00b.
Consult the oscillator manufacturer to determine the optimal oscillation circuit constants for the user system.
To use the MCU with supply voltage below VCC = 2.7 V, it is recommended to set the CM11 bit in the CM1
register to 1 (on-chip feedback resistor disabled) and connect the feedback resistor to the chip externally.
Oscillation Stop Detection Function
Oscillation Circuit Constants
33. Usage Notes

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